thanks I will have to try that. Yes 2300 credits in the credit window. Also I can't find the white reset button that most are near the power switch. Mine doesn't have one there. There is a key on top of the main mother board assembly, but not sure what that does.
For clarification...>>>
#1. On older S+'s, the white button is located on the front of the MPU tray enclosure on the left interior wall of the machine.
It is called the Test button or Test Switch.
They also located the power switch gangbox on the floor next to the hopper.
For different model S+'s, IGT placed the MPU tray on the back wall of the machine and the power switch under the reel shelf on the right cabinet wall.
IGT located the white Test button either in front or behind the power switch gangbox.
#2. The small keyhole outside of the cabinet on the right hand side of the machine is called the Reset switch, in which you'd use a Reset Key.
#3. The keyhole on top of the MPU circuit board is for locking the tray enclosure which houses the MPU circuit board.
That's all it's for...nothing else.
Anyway, to clear your credits off of the display, just hit the credit button on the button deck and then turn the Reset key on the right side outside of the machine once momentarily
It will turn reset your credits to zero if your credit limits are set for less than 2,300 credits. (Most here set it at 1,000 credits)
If not, then you will need coins to clear all the credits out of the hopper.
or
Clear the ram chips with a Clear chip.
Pressing the Test button will do exactly nothing at the moment because the options in the machine settings cannot be changed with credits on the display.